Category: 25186-47-4

Application of 25186-47-4,Some common heterocyclic compound, 25186-47-4, name is 3,5-Dichlorotoluene, molecular formula is C7H6Cl2, traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.

EXAMPLE 5 4-(1-Naphthoyl)-3,5-dichlorotoluene To a stirred, cold (-60 C.) solution of 3,5-dichlorotoluene (3.5 g, 21.7 mmol) in dry tetrahydrofuran (30 ml), 2.6 M n-butyllithium in hexane (8.78 ml, 22.8 mmol) was added dropwise over 15 minutes. The reaction mixture was stirred for one hour at -60 C. and then treated with a solution of 1-naphthoyl chloride (4.14 g, 21.7 mmol) in 15 ml of dry tetrahydrofuran over a period of 15 minutes. The mixture was stirred for 3.5 hours at -60 C. and then quenched with 4.8 ml of saturated NH4 Cl solution. The mixture was permitted to warm to room temperature and then diluted with 30 ml of water and 30 ml of ether. The layers were thoroughly mixed and then separated. The etheral layer was backed-washed with brine and dried with anhydrous magnesium sulfate. Concentration afforded 7.12 g of crude product which was chromatographed on silica gel (20:1 hexane:ethyl acetate) to give 1.59 g (23 %).

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 3,5-Dichlorotoluene, its application will become more common.

Reference:
Patent; Merck & Co., Inc.; US4923885; (1990); A;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

In the chemical reaction process, reaction time, type of solvent, can easily affect the result of the reaction, thereby determining the yield and properties of the reaction product. An updated downstream synthesis route of 25186-47-4 as follows. Quality Control of 3,5-Dichlorotoluene

(1) device: Referring to Figure 2 to determine the connection of the tubular reactor, the pipeline type is:(3a + 3d) DC-channel+ enhanced hybrid round cake rectangular flat pipe,Pipe diameter and volume based on the flow rate and reaction to determine the residence time,Heat transfer medium for thermal oil.(2) 6.06 g of cobalt acetate and 6.06 g of sodium molybdate were dissolved respectively200ml3,5 – dichloro toluene and200ml acetic acid to form a mixed solution,In this case, n (cobalt acetate): n (3,5-dichlorotoluene) = 0.015: 1,6.06 g of sodium bromide was dissolved in 20% H2O2 to form a H2O2-acetic acid solution, where n (sodium bromide): n (3,5-dichlorotoluene) = 0.015: 1,3,5-dichlorotoluene-acetic acid Solution and andH2O2-acetic acid solution respectively to 8.33ml / min andThe flow rate of 16.67 ml / min was injected into the tubular reactor which was continuously heat-exchanging by the constant current pump, at this time, n (H2O2): n (3,5-dichlorotoluene) = 2:Using the microchannel reactor of Figure 2,The reaction temperature was controlled at 105 C and the residence time was 600 s.The outlet was cooled at 0 C and the reaction quenched with dichloromethane.After GC analysis, 3,5-dichlorotoluene conversion rate of 60.8%The yield of 3,5-dichlorobenzaldehyde was 39.2%.

According to the analysis of related databases, 25186-47-4, the application of this compound in the production field has become more and more popular.

Reference:
Patent; Changzhou University; Yan Shenghu; Jiang Xin; Zhang Yue; Liu Jianwu; Shen Jiefa; Ma Xiaoming; Chen Daixiang; Gu Shunlin; Ni Fengchao; Li Yanfei; Wang Qiuhong; Chen Mingzhu; Wei Jin; Wu Fei; Zhang Yongchao; (9 pag.)CN106588606; (2017); A;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Reference of 25186-47-4, A common heterocyclic compound, 25186-47-4, name is 3,5-Dichlorotoluene, molecular formula is C7H6Cl2, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.

To a stirred solution of l ,3-dichloro-5-methylbenzene (2.0 g, 12.4 mmol) in THF (20 mL) was added n-BuLi (2.0 M in hexane, 9.3 mL, 18.6 mmol) at -78 C dropwise over a period of 10 miri and mixture was stirred at -78 C for 30 min. A dry-ice was added to the reaction mixture slowly and the mixture was stirred at the same temperature for 20 min. Thereafter, the reaction mixture was slowly warmed to room temperature, quenched with 6 M HC1 (10 mL) and extracted with EtOAc (2 x 30 mL). The combined organic layers were washed with water (50 mL), brine (50 mL), dried over anhydrous Na2S04 and concentrated under reduced pressure to get compound Al 11 -1 (1.1 g, 44%) as a white solid.

The synthetic route of 25186-47-4 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; TEIJIN PHARMA LIMITED; AMGEN INC.; BECK, Hilary Plake; BOOKER, Shon Keith; BREGMAN, Howard; CEE, Victor J.; CHAKKA, Nagasree; CUSHING, Timothy D.; EPSTEIN, Oleg; FOX, Brian M.; GEUNS-MEYER, Stephanie; HAO, Xiaolin; HIBIYA, Kenta; HIRATA, Jun; HUA, Zihao; HUMAN, Jason; KAKUDA, Shinji; LOPEZ, Patricia; NAKAJIMA, Ryota; OKADA, Kazuhisa; OLSON, Steven H.; OONO, Hiroyuki; PENNINGTON, Lewis D.; SASAKI, Kosuke; SHIMADA, Keiko; SHIN, Youngsook; WHITE, Ryan D.; WURZ, Ryan P.; YI, Shuyan; ZHENG, Xiao Mei; WO2015/129926; (2015); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics